resourceType_txtF_mv:"Teaching Media"topic_facet:"k-9"topic_facet:"k-5 geosource"topic_facet:"k-5"topic_facet:"6-8"gradeLevel_txtF_mv:"K"gradeLevel_txtF_mv:"10"ngssPE_txtF_mv:"5-ESS2-1"publisher_txtF_mv:"Geological Society of London (GSL)"ngssCC_txtF_mv:"Systems and system models"